Gruca, A. “IV International XI Interdisciplinary Conference on ‘Nature–Human–Culture’ Cracow, June 14th–17th, 2018”. Annales Universitatis Paedagogicae Cracoviensis Studia Naturae, vol. 3, no. 1, Dec. 2018, pp. 186–190, https://aupcstudianaturae.uken.krakow.pl/article/view/5469.